More and more people have been using cell phones as cell phone technology continues to expand at a rapid pace. A cell phone gives you the ability to stay in touch with your friends, relatives, and co-workers from almost anywhere in the world. That’s amazing, have you ever wondered how do cell phones work?
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How Do Cell Phones Work?
A cell phone is a two-way radio which has a radio receiver and a radio transmitter. When you talk to someone on your cell phone, your voice is converted into an electrical signal which is transmitted to the nearest cell tower via radio waves.
Then the cell tower sends the radio wave to the cell phone of the person that you’re talking to and converts it to an electrical signal then back to sound again.
This is how a cell phone works when you’re making a basic voice call. In addition to voice calls most modern cell phones give you the ability to video chat, text, take photos, play video games, surf the web, watch movies and play music.
The more sophisticated phones have more features and functionalities.
How Do Cell Phones Connect To Cell Towers?
As I stated earlier, a cell phone works by providing two-way wireless communication and it needs an inbound signal aka reception and an outbound signal aka transmission to be able to work.
The strength of the signal received from the cell tower is known as signal strength, this is indicated by the bars on your cell phone.
The connectivity between your cell phone and its cellular network depends on the reception and the transmission and it’s affected by quite a few different factors.
Such as the number of impediments between your cell phone and the nearest cell tower, the distance between your cell phone and the nearest cell tower, and the type of wireless technology your cell phone service provider uses ie. CDMA or GSM.
When you have poor reception this is the result of lots of signal interruption between your cell phone and the cell tower or the nearest cell tower may be too far away.
Your cell phone will vary the strength of its transmitted signal and it will only use the minimum amount of resources to communicate with the closest cell tower.
This is necessary to conserve the battery life on your phone because when your cell phone has poor reception it has to transmit a stronger signal to be able to connect to the cell tower.
This causes the battery to drain faster, so when you have strong reception you will have less dropped calls, however, you will also have longer battery life.
Your Cell Phone Uses Radio Waves:
Radio waves are responsible for transporting digitized voice or data via oscillating electric and magnetic fields. This is referred to as the electromagnetic field (EMF).
The frequency refers to the rate of oscillation, when the radio waves transport the voice or data it travels at the speed of light.
Your cell phone transmits radio waves in all directions. Sometimes these radio waves are reflected and absorbed by objects nearby.
For example, if you hold your cell phone to your ear during a phone call, a substantial amount of the emitted energy will be absorbed into your head.
When this occurs, a significant amount of your cell phone’s EMF energy will no longer be available for communication.
Cell Phone Antenna:
A cell phone antenna is a metallic object which was designed to transmit and receive specific radio frequencies.
Your cell phone has at least one radio antenna this is necessary to transmit or receive radio signals. There are some cell phones which use one antenna as the transmitter and receiver.
However, there are other cell phones which have multiple transmitting or receiving antennas.
Most modern cell phones have their antennas inside the phone.
While the older generation of cell phones have external antennas. All metallic objects inside the cell phone can interact with the antenna and contribute to the transmitted signal.
Quite a few of the cell phones today have various types of antennas which work in conjunction with the cellular antenna. These cell phones may have Bluetooth, GPS, and Wi-Fi antennas. Now you know how cell phones work.